Which is the difference between the DR...

Question 1 / 2066636ee928f7522a1c5195a0

Question 1 of 2066636ee928f7522a1c5195a0

Which is the difference between the DR position and a fix, both of which have the same time?

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Question 1 of 20

66636ee928f7522a1c5195a0

Which is the difference between the DR position and a fix, both of which have the same time?

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🔍 Key Concepts

• Dead reckoning (DR) position vs fix on a chart • Effects of wind and sea (leeway) vs current (set and drift) • What factors are and are NOT included when you advance a DR from last known position

💭 Think About

• When you advance a DR position from a known starting point, which forces do you normally include in that plot? Which forces are intentionally ignored? • A fix shows where the vessel actually is. What additional real-world effects can move the vessel off the DR track between times? • Look at each option: which one would change your compass/heading indications, which would push your hull sideways through the water, and which would carry the water (and boat) over the ground?

✅ Before You Answer

• Be clear on the definition: DR position = course and speed through the water only, no external forces • Recall that a fix represents the ship’s actual position over the ground at that time • Identify which choice represents movement of the water itself rather than errors in compass or wind-caused sideways motion of the vessel.

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Question 1 of 20

Which is the difference between the DR position and a fix, both of which have the same time?

Variation

Leeway

Deviation

Current

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Question 1 / 2066636ee928f7522a1c5195a0

Question 1 of 2066636ee928f7522a1c5195a0

Which is the difference between the DR position and a fix, both of which have the same time?

Back

Question 1 of 20

66636ee928f7522a1c5195a0

Which is the difference between the DR position and a fix, both of which have the same time?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed